Table 2.

Occupational radiation exposure of monitored diagnostic radiology workers in Taiwan from 2013 to 2020.

	Number of total monitored diagnostic radiology workers			Related parameters of occupational radiation exposure
	Male	Female	Total	A	B	C	D	E
2013	6180	5542	11,722	683	5.83	311.04	0.03	0.45
2014	6273	5732	12,005	789	6.57	376.45	0.03	0.48
2015	6615	6080	12,695	826	6.51	364.84	0.03	0.44
2016	6821	6367	13,188	640	4.85	455.91	0.03	0.71
2017	7054	6472	13,521	685	5.07	388.61	0.03	0.57
2018	7208	6759	13,967	798	5.71	436.64	0.03	0.55
2019	7692	7239	14,931	910	6.09	510.89	0.03	0.56
2020	7896	7488	15,384	826	5.37	388.74	0.03	0.47
Total increased number	1716	1946	3662	143	−0.46	77.70	–	–
Mean annual increased number	245.14	278	523.14	20.43	−0.07	11.10	–	–
Total increase rate (%)	27.77	35.11	31.24	20.94	−7.89	24.98	–	–

A parameter: the number of the measurably exposed workers.

B parameter: the proportion of the measurably exposed workers to the total monitored workers (%).

C parameter: the annual collective exposure dose (man-Sv).

D parameter: the mean annual effective exposure dose of the total monitored workers (mSv).

E parameter: the mean annual effective exposure dose of the measurably exposed workers (mSv).